Delphia



(Model.)

G.. M. 0. & J. G. RBHFUSS.

TOOL4 HOLDER.

Patented July 12, 1892.

.Rill

ATTORNEY.

l F. Qu .LL N H www NITED kSTATES ArtNr FFICE..

GEORGE REHFUSS, MARTIN O. REHFUSS, AND JOHN G. REHFUSS, OF PHILA-DELPHIA, PENNSYLVANIA, ASSIGNORS TO HENRY D. J USTI, OF SAME PLACE.

TOOL-HOLDER.

SPECIFICATION forming part of Letters Patent No. 478,943, dated July 12,1892.

Application filed September 22, 1890. Serial No. 365,846x (Model.)

To all whom it may concern:

Be it known that we, GEORGE REHFUSS, MARTIN O. REHFUss, and JOHN G.REHFUss, citizens of the United States, residing in the city and countyof Philadelphia, State of Pennsylvania, have invented a new and usefulImprovement in Tool-Holders, which improvement is fully .set forth inthe following specification and accompanying drawings.

Ourinvention consists of a novel tool-holder having a sleeve adapted tohold the shank of a tool and to be compressed by contact with aninclosing casing.

It further consists of the combination of parts hereinafter set forth.

Figure 1 represents a central longitudinal section of a tool-holderembodying our invention. Fig. 2 represents a view of a portion of thecompressible sectional sleeve, the inclosing case being in section. Fig.3 represents a view of the same part-s, the sleeve and case being indifferent relative positions from those shown in Fig. 2. Fig. 4represents a perspective view of the operating-spindle. Fig. 5represents a modification of part of the device.

Similar letters of reference indicate corresponding parts in theseveral'iigures.

Referring to the drawings,'A designates a tool-holder having an outershell or casing B with a tapering or conical end B. Within the shell Bis an inner casing C, adapted to be revolved in said shell, which issecured therein by a screw-cap D, so as to prevent any longitudinalmovement of the same.

NVithin the casing C is a compressible sectional sleeve E, correspondingin form to the inner face of the casing and consisting of the parts Fand G, each extending longitudinally and having tapering ends F G. Thesaid sections, which are normally separated longitudinally, are providedat intervals with enlarged portions H, adapted to contact with the innerface of the casing C, the other parts of the surface thereof betweensaid portions H being free from contact with the said casing, so as tolessen the friction in operating the device. The sections have socketsH,

adapted to receive the shank of the tool, the said shank passing throughopenings in the ends of said shell and casing into said sockets. One endof each of the sections F G is connected with a head H2 by a pin Jpassing through an opening in the sectionand ent-ering the head, the pinbeing ofsuch diameter as to permit a slight movement of the sections onthe said head.

Fitting in one end of the casing C and adapted to slide therein is ahead K, having a spindle L, which operates in a sleeve M, passingthrough an opening in the cap D. Pivotally secured to the inner face ofthe casing C is one end of the member N of a togglelever, the othermember P being pivoted to the head H2. Forming a part of thehead K andwithin the casing C is a piece Q with the sides R and a cross-piece S,the latter having an inclined under face adapted to contact with theouter part of the jointed end of the member N of the toggle-lever, and aconnecting strip or neck T, having its forward end or portion betweenthe sides R provided with an inclined face U, adapted to contact withthe opposite side of the front end of the said member N from thatcontacted with by the crosspiece S.

To prevent the withdrawal or separation of the sleeve M from the device,the outer end thereof is enlarged and provided with an annular groove V,in which is located a collar X, secured to the spindle L by means ofscrews Z, which are inserted into said collar and spindle throughopenings Yin the sleeve, the heads of the screws being flush with theperiphery of the collar, so that they do not interfere in the rotationof said collar and spindle within the sleeve.V

The manner of operating the device is as follows: The parts beingA inposition, as in Fig. 1, the shank of the tool is inserted in theopenings in the smaller end of the shell and casing and the spindle isdrawn back, so'that the inclined under face of the cross-piece S comesin contact with the outer end of the member'N, forcing the latter, andwith it the member P, in such direction that the lever is opened, andthe end of the said member P, which is pivoted to the head H2, is pushedalong with the said head and the sections F G connected therewith towardthe smaller end IOO of the casin g, where, owing to the tapering orconical form ot the said casing, the ends of the sections in contacttherewith are pressed closer together, thereby clamping the tool, sothat the same is firmly held in place. To release the tool, the spindleL is pushed in, so that the inclined face U of the neck T, engaging themember N of the toggle-lever, closes the lever, the cross-piece S havingpreviously passed over the said lever, so as to be out of the way of thejoint thereof. As the said toggle-lever is being closed, the head 112,with the sections F G, are drawn away from the smaller end of thecasing, so as to release the pressure of the said sections on the shank,and thereby permit the release of the tool.

In the modification shown in Fig. 5 a coilspring V is inserted betweenthe end ol` a stem on the head ll2 and shouldered portions of thesections F and G, thereby adapting the movement of the sections, so asto permit the insertion in the sockets of shanks of diil'erent diametersand tightly hold and clamp the same therein, the tension or grip beinguniform in each case, whether the diameter of the shank is larger orsmaller.

Having thus described our invention, what we claim as new, and desire tosecure by Let ters Patent, is-

l. A tool-holder having a casing with a tapering or conical end, a headmovable in said casing and having secured thereto a sleeve with tapcring ends, a toggle-lever having one end pivoted to the casing and theother to the head, and mechanism, substantially as described, oroperating said toggle-lever, said parts being combined substantially asdcscribed.

2. A tool-holder having a casing with a tapering end having an openingtherein, a head movable in said casing and having a compressible sleevesecured thereto, a toggle-lever pivoted to the casin g and head, and aspindle with mechanism attached thereto, substantially as described, foropening and closing said toggle-lever, said parts being combinedsubstantially as described.

3. A tool-holder having a easing with atapering end having an openingtherein, a head movable in said easing, a compressible sleeve connectedwith said head, a toggle-lever pivoted to said head and casing, aspindle with a cross-piece adapted to contact with the said lever, so asto open the same, and means, substantially as described, connected withthe spindle for closing said lever, said parts being combinedsubstantially as described.

Il. A tool-holder having a casing, a compressible sleeve within saidcasin g consisting ot' sections, a head connected to each of saidsections by pins passing through enlarged openings in said sections, andmechanism pivotally connected with said head and casing for closing saidsleeve, said parts heilig combined substantially as described.

5. A tool-holder having a casing, a compressible sleeve Within saidcasing formed ol. longitudinal sections, a head connected with saidsections, a toggle-lever pivoted to said head and casing, a head with aspindle, anda strip or neck secured to said last-mentioned head andhaving an inclined front portion adapted to contact with one side of amember ot the said toggle-lever, said parts being combined substantiallyas described.

G. A tool-holder having a casing, a spindle therein provided with asleeve having an enlarged portion with an annular groove therein,acollar on said spindle within said groove, and screws securing thecollar to said spindle, said sleeve having openings in its sides for thepassage ol' said screws, said parts being combined substantially asdescribed.

GEORGE l'tEIiFUSS. MARTIN O. REIIFUSS. JOHN G. REIIFUSS. lVitnesses:

JOHN A. WIEDERsnum, A. l). JENNINGS.

